/* 
 * Copyright 2010 Ziya Guven Koylu, Ozge Koylu
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at 
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package com.koylu.caffein.converter;

import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class BlobConverter extends GenericConverter{
	
	public Object columnToField(ResultSet resultSet, int index) throws Exception {
		Blob blob = resultSet.getBlob(index);
		if(blob != null){
			return blob.getBytes(1, (int) blob.length());
		}
		return null;
	}
	
	public Object columnToField(CallableStatement callableStatement, int index) throws Exception {
		Blob blob = callableStatement.getBlob(index);
		if(blob != null){
			return blob.getBytes(1, (int) blob.length());
		}
		return null;
	}
	
	public Object columnToField(ResultSet resultSet, String column) throws Exception {
		Blob blob = resultSet.getBlob(column);
		if(blob != null){
			return blob.getBytes(1, (int) blob.length());
		}
		return null;
	}
	
	public void fieldToColumn(PreparedStatement preparedStatement, Object value, boolean columnNullable, int index) throws Exception {
		if (columnNullable && isNull(value)) {
			preparedStatement.setNull(index, getJdbcType());
		} else {
			preparedStatement.setBytes(index, (byte[])value);
		}
	}
}